Intelligent multi-channel collector

BMT-F830 series Intelligent multi-channel collector

Eight channel mV/V/mA isolated input

I. Overview

The BMT-F830 multi-channel collector is a 16 bit microprocessor that uses a ∑ - Δ converter ADC chip. Power supply, communication, input isolation, and mutual isolation between channels. Strong anti-interference ability, this design is suitable for use in live/strong interference environments, such as measuring the temperature of multiple points inside transformers, the temperature of various points of machine equipment motors, the temperature of heating devices on circuit board chips, the temperature and voltage of each battery in the battery pack, and the isolation of input transformer currents.

2、 Functional Features

Power supply, input, and communication isolation, with an isolation voltage of 1500V.

Eight isolated inputs, channels are isolated from each other, with an isolation voltage of 600V.

Can order thermocouple 0-100mV/current divider or DC0-10V or 4-20mA, etc

Equipped with protection against overvoltage, overcurrent, overload, static electricity, etc.

The wide range DC10-30V power supply works normally when the power supply is reversed.

OLED wide temperature display screen with button display for convenient on-site debugging and setting by users.

Isolation and lightning protection RS485 interface, standard MODBUS-RTU communication protocol.

DIN35 rail installation method, stackable installation.

IIIIntelligent multi-channel collectorMain technical indicators

4、 Product size, wiring terminals

5、 Product selection

Multi channel collectorBMT-F830- □□-□□-□ (M212)

①② ③④ ⑤⑥

Note: 1. The selection must be complete, and any functions not selected must also be filled in with code.

2. When inputting mA signal, 4-20, 0-20, 0-10mA can be set; when inputting voltage V signal, 1-5V, 0-5V, 0-10V or customized maximum 300V can be set

Selection example: BMT-F830-KP3-R0S-D (M212)

6、 Operating instructions

（2） Parameter setting

In working mode, the instrument displays multiple channel measurement values simultaneously. Press and hold the SET key for about 1 second to enter the password input screen. In the set state, display parameter prompt information and set values. If there is no button operation within about 60 seconds during the setting process, it will automatically exit the setting state and enter the running state. After setting a parameter, press the SET key to confirm and enter the next parameter setting state. During the setting process, long press the ◄ key for about 2 seconds to return to the previous parameter setting state.

7、 Communication instructions

(1) This product is equipped with RS232 and RS485 interfaces for direct communication with computers. The RS485 standard communication distance is 1.5km, and multiple instruments can be mounted. The RS232 standard communication distance is 15m, and only one instrument can be attached. The TXD, RXD, and GND of the RS232 interface are respectively connected to the second, third, and fifth pins of the computer serial port. The data format consists of 1 start bit, 8 data bits, no checksum, and 1 stop bit. To avoid communication conflicts, the instruments are all in listening mode. The computer sends a command to a certain instrument at a specified address, and then waits for a period of time for the instrument to respond. After the instrument receives the correct command, it sends out the data. After sending, the instrument is in listening mode again. In the same system, instrument addresses cannot be the same, and baud rates must be consistent.

(2) Adopting the standard Modbus RTU communication protocol, using the 03, 04, and 06 function numbers. When using the configuration software touch screen, select a PLC with standard Modbus or Modicon (XX Kang) device, Modbus RTU address type, function number 3X or 4X can be used, register address starts from 1, data is a signed 16 bit integer, use the Configuration King register (i.e. 4x001, 4x000), other configuration software may start from 3x001 or 3x000. Users need to handle the decimal places according to their actual situation. It is recommended for user programming to define signed integer data, or by calculation. When the data is greater than 0X7FFF (decimal 32767), subtract the data from 65536 and then take a negative value. For example, if the communication transmission data is 0XFF9C (decimal 65436), 65536-65436=100, then take a negative value of -100. Professional algorithms can also use reverse addition 1. For long integer data such as cumulants, the data value is equal to high-order x 65536+low order, or the data type can be selected as long integer (Long), and the system will automatically calculate the cumulant. The registers 4x1024-4x1040 are single precision floating-point numbers with 8 measurement values, following the standard IEEE754, for example 0x42CAFBCF corresponds to 101.4918.

(4) Example: Read the first data value with address 1: Send data as 01 03 00 00 01 84 0A, where 01 is the lower level machine address, 03 is the function number, 00 and 00 are the register start addresses, 00 and 01 represent reading a number, and 84 and 0A are CRC check codes; The returned data is 01 03 02 E8 B8 FA. In the returned data, 01 is the instrument address, 03 is the function number, 02 is the number of data, and the measured values of 03 and E8 correspond to integers of 1000. The user can determine the decimal point position based on the situation, such as 100.0 ℃; B8 and FA are verification codes. If you want to read two pieces of data, you can send 01 03 00 00 02 C4 0B and read eight temperature measurements: 01 03 00 00 08 44 0C.

(5) When communication is not available, check that the wiring is correct; The communication converter is functioning properly; After disconnecting the communication wiring, the RS485 interface was measured to have a voltage of 1.6-3.0V; Related parameters: The communication address baud rate checksum is set correctly; Swap wiring (RS485 reverse connection will not damage the interface).

8、 Alarm instructions

Upper limit alarm: If the measured value is higher than the alarm value, it will be in an alarm state. If the measured value is lower than the alarm value minus the difference value, the alarm state will be released;

Lower limit alarm: If the measured value is lower than the alarm value, it will be in an alarm state. If the measured value is higher than the alarm value plus the hysteresis value, the alarm state will be released;

Turn off alarm value: Prohibit alarm. The alarm status values of each channel can be read through communication.

9、 Warranty

If it is a manufacturing quality problem caused by the factory, the instrument will be repaired free of charge from the date of leaving the factory. If the damage is caused by improper storage and use, the repair cost will be charged. The warranty period is eighteen months.

Bomint Chengdu Technology Co., Ltd. is committed to the field of industrial automation control, integrating research and development, production, sales, and service. It is a professional manufacturer of intelligent measurement and control instruments and meters. Based on the accumulation and continuous innovation of over 20 years of R&D experience in the company, we have formed our own intellectual property brand bomite® The series of products includes recorders, single channel measuring and controlling instruments, multi-channel inspection instruments, flow integrators, PID controllers, weighing instruments, isolation barriers, voltage and current meters, frequency tachometers, timer counters, signal sources, and dozens of other series. The products are widely used in various industries and scientific research sites such as chemical, power, and petroleum.

Bomint always adheres to the concept of "striving for excellence and craftsmanship spirit", constantly exploring and innovating, with quality as the core and Industry 4.0 as the guide.

Integrity management, dedicated service, and wholeheartedly providing users with high-quality automation instruments and meters.